Flue fire resisting damper and flue system with same

Abstract

The invention discloses a flue fire resisting damper and a flue system with the same. The flue fire resisting damper comprises flue gas channel formed by a shell, wherein a mounting plate is arrangedon the outer wall of the shell, one end of the flue gas channel is provided with an air inlet, the other end, opposite to the air inlet, of the flue gas channel, is the air outlet end, valve plates which can only be opened towards the air outlet direction is arranged in flue gas channel or on the end surface of the air outlet end, a flow guide cover is arranged on the inner side of the mounting plate, flue locking pieces capable of fixing the mounting plate on the flue gas channel are arranged on the mounting plate, hook head grooves for mounting the flue locking pieces are arranged on the left side and the right side of the flow guide cover correspondingly, and a locking bolt penetrating hole is formed in the mounting plate. According to the flue fire resisting damper, the flue fire resisting damper is arranged and fixed to the common flue gas channel, and hook pieces of the flue locking pieces are pulled to swing through a locking bolt, so that the hook pieces are clamped on the inner wall of the flue gas channel; and the flue fire resisting damper has the advantages that the structure is stable, and the installation, the fixation and the replacement are facilitated.

Description

technical field [0001] The invention relates to a flue fire damper used in a kitchen using a public flue flue and a flue system having the same. Background technique [0002] In kitchens using longitudinal public flue ducts, in order to prevent oily fumes from flowing back into the kitchen, a device such as a flue fire damper is generally installed between the outlet pipe of the range hood and the public flue duct. , the existing flue fire damper generally includes a flue gas passage formed by a casing, the flue gas passage has a relative air inlet and an air outlet, the air inlet is connected to the outlet pipe of the range hood, and the air outlet extends into the public In the flue gas duct, there is a valve plate that can be opened and closed at the air outlet of the flue gas channel. One or two valve plates are hinged on the flue gas channel through the shaft of the valve plate. High temperature shut-off device. When the range hood is not in use, the valve plate is in...

AI Technical Summary

Problems solved by technology

However, the high-temperature closing device on the existing flue fire damper uses the power of the spring to close the valve plate. When the high temperature in the public flue gas duct continues for a certain period of time, the spring will fail due to high temperature, and the valve plate will lose the restraining force of the spring and will be closed again. Open, high temperature and harmful gas will pour into the user's home, thus threatening the life safety of the residents

Images